Using the NE/SA5234 amplifier:The NE/SA5234 is a unique low-voltage quad operational amplifierspecifically designed to operate in a broadly diverse environment. Itis an enhanced pin-for-pin replacement for the LM324 category ofdevices. Supply conditions can range from 1.8V to 6.0V with aresultant current drain of 2.8mA,-700mA per op amp.Most notable are the input and output dynamic range characteristicsof the individual op amps. The common-mode input voltage canactually exceed the positive and negative supply rails by 250mVwith no danger of output latching or polarity reversal. In addition, theoutput of each op amp will swing to within 50mV of the supply railsover the full supply range.The frequency related characteristics are also above average forlow voltage devices in this class. Internal unity gain compensationmakes the NE5234 very resistant to any tendency to oscillate in lowclosed-loop gain configurations. Even so, a unity-gain bandwidth of2.5MHz is retained. Slew rate is 0.8V/ms and each op amp will settleto a 1% of nominal level within 1.4ms.
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